The Ultimate Chocolate Zucchini Muffins

These chocolate zucchini muffins are wonderfully moist with an intense chocolate taste and delightful pockets of melted chocolate chips. I find them to be the perfect decadent treat and a truly fantastic way to use up fresh zucchini from the garden. If you love a rich, chocolatey bite that’s also incredibly tender, these are an absolute must make. They come together easily and are perfect for breakfast or dessert.

Close-up of chocolate zucchini muffins on a white plate, showcasing their dense, chocolatey interior.

Baking with Zucchini Adds Wonderful Moisture

Using fresh, grated zucchini really makes baked goods shine, especially muffins, loaves, and cakes. These chocolate zucchini muffins are a perfect example. They boast a delicious chocolate flavor that isn’t overly sweet, and their texture is incredibly moist and tender. I just love how they bake up with perfectly domed tops. These muffins hit the sweet spot for me they have enough chocolate to satisfy a serious craving, but they aren’t so overwhelmingly rich that you couldn’t enjoy one with your morning coffee.

Delicious chocolate zucchini muffins arranged on a white plate, highlighting their rich color and texture.

One of the best parts of baking with zucchini is the incredible moisture it adds to the batter. Zucchini itself has a very mild and delicate flavor, so you absolutely won’t taste it in the finished muffins. I personally prefer to grate my zucchini very finely. This helps it to almost completely disappear or “dissolve” into the batter as it bakes. It’s also quite important to gently remove some of the excess water from the grated zucchini. I find using a paper towel works really well for this. Just pat and gently squeeze out the extra liquid and any zucchini juice. You don’t need it to be completely dry, but you want to avoid it being soaking wet.

You don’t actually need to peel the zucchini before you grate it. The skin is thin and blends in perfectly well once the muffins are baked.

Charming arrangement of chocolate zucchini muffins on a white plate, ready to be enjoyed.

Crafting Delicious Chocolate Zucchini Muffins

This recipe is truly simple and very straightforward. You can easily make the batter by hand using just two bowls. For a clear explanation and visual guide (if you were following along with photos), I will walk you through the steps below. The process ensures tender, moist muffins every time.

Stacked chocolate zucchini muffins on a white plate, emphasizing their homemade appeal.

Here is how I like to make these incredibly moist chocolate zucchini muffins.

  • First, you will finely grate the zucchini. Make sure to gently squeeze out any extra liquid using a paper towel as I mentioned before. It shouldn’t be totally bone dry. You just want to get rid of the excessive moisture so it doesn’t make the batter too wet.
  • Next, in a medium-sized bowl, I combine all the dry ingredients. This includes the flour, cocoa powder, baking powder, baking soda, and salt. Whisking these together helps to break up any lumps in the cocoa powder. It also makes sure the baking soda and baking powder are spread out evenly. This helps the muffins rise beautifully.
  • Then, in a separate, larger bowl, I whisk together the wet ingredients and the sugars. This involves the oil, granulated sugar, brown sugar, eggs, vanilla extract, and milk. Make sure you whisk well enough so that the sugar starts to dissolve and there are no distinct pieces of egg yolk visible. The oil and milk in this mixture really contribute to the wonderfully moist and tender texture we are aiming for in these muffins.
  • Now, carefully pour the whisked dry ingredients into the bowl with the wet ingredients. Gently mix them together just until you no longer see any dry spots or flour lumps. The batter will likely look quite glossy at this point. It might also seem a bit thick or sticky. A rubber spatula is great for folding at first, then a quick whisk helps smooth it out a bit.
  • Using a rubber spatula, gently fold in the prepared grated zucchini and the chocolate chips. You will be able to see small pieces of the zucchini distributed throughout the batter. As the muffins bake, these pieces will soften and blend right in. You might notice that the batter seems a little thinner than some other muffin batters you’ve made. This is perfectly normal and exactly how it should be for this recipe.
  • Carefully spoon the batter into a standard 12-cavity muffin pan that has been lined with paper liners. I like to fill each cup about three-quarters of the way full. Sometimes I fill them slightly more, closer to seven-eighths full, to get those nice tall tops.
  • Finally, place the pan into your preheated oven to bake. They typically need about 20 to 25 minutes. You’ll know they are done when the tops look nicely rounded and baked. You can test for doneness by inserting a toothpick into the center of a muffin. It should come out clean or with just a few moist crumbs attached. Don’t worry if you hit a melted chocolate chip, that doesn’t count.
Dark, moist chocolate zucchini muffins on a white plate, showcasing their dense texture and chocolate chips.

Common Questions About Chocolate Zucchini Muffins

Here are answers to a few things people often ask about making these muffins.

Do I need to peel the zucchini?

Not at all. The skin is thin and softens right into the muffin as it bakes. It won’t affect the taste or texture.

Why squeeze the zucchini?

Zucchini holds a lot of water. Gently squeezing it prevents your muffin batter from becoming too wet. Too much moisture can lead to dense or gummy muffins.

Can I use frozen zucchini?

Yes, but make sure it’s thawed first. Then, squeeze out as much liquid as possible, even more than you would with fresh zucchini.

How should I store these muffins?

Keep leftover muffins in an airtight container at room temperature. They stay fresh for about three days.

Can these muffins be frozen?

Absolutely. Once they are completely cool, you can freeze them in a freezer-safe bag or container for up to two months. Thaw them overnight in the refrigerator before enjoying.

What kind of chocolate chips are best?

I like using semi-sweet chocolate chips, but milk chocolate or even dark chocolate chips work wonderfully too. It just depends on your preference for sweetness and intensity.

Can I make this into a loaf?

This recipe can often be adapted into a loaf cake. Baking time and temperature would need to be adjusted, typically longer at a slightly lower temperature.

Print
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Close-up of chocolate zucchini muffins on a white plate, showcasing their dense, chocolatey interior.

The Ultimate Chocolate Zucchini Muffins

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  • Author: Ryan Miller
  • Prep Time: 20 minutes
  • Cook Time: 22 minutes
  • Total Time: 42 minutes
  • Yield: 12 muffins
  • Category: Muffins
  • Method: Oven

Description

These Chocolate Zucchini Muffins are incredibly moist with an intense chocolate flavor and pockets of melty chocolate chips. They are the perfect decadent treat and a fantastic way to use fresh garden zucchini!


Ingredients

  •   1 cup (190 grams) finely grated zucchini, from about one small to medium zucchini
  •    1 ½ cups (190 grams) all-purpose flour
  •    ½ cup (40 grams) unsweetened cocoa powder
  •    1 teaspoon baking powder
  •    ½ teaspoon baking soda
  •    ¼ teaspoon salt
  •    ½ cup (120 ml) vegetable or canola oil
  •    ½ cup (100 grams) granulated sugar
  •    ½ cup (100 grams) light or dark brown sugar
  •    2 large eggs
  •    1 teaspoon vanilla extract
  •    ¼ cup (60 ml) milk
  •    ¾ cup (120 grams) chocolate chips

Instructions

  1. Preheat your oven to 375F (190C or 180C for fan ovens). Line a 12-cup muffin pan with paper liners.
  2. Pat the grated zucchini with paper towels. Gently squeeze out extra water. It won’t be totally dry, but it shouldn’t drip.
  3. In a medium bowl, mix together the flour, cocoa powder, baking powder, baking soda, and salt.
  4. In a separate large bowl, whisk the oil, granulated sugar, brown sugar, eggs, vanilla, and milk. Make sure the eggs are well mixed in.
  5. Pour the dry ingredients into the wet ingredients. Gently mix until you don’t see any dry spots or lumps. The batter will look shiny and thick. A rubber spatula works well to fold it first, then you can whisk a bit more to make it smooth.
  6. Use a rubber spatula to fold in the grated zucchini and the chocolate chips.
  7. Spoon the batter into the lined muffin cups. Fill each cup about three-quarters full, maybe a little more.
  8. Bake in the hot oven for about 20 to 25 minutes. The tops should look rounded, and a toothpick put into the center should come out clean or with just a few moist crumbs.
  9. Let the muffins cool in the pan for about 10 to 15 minutes. Then move them to a wire rack to finish cooling completely.

Notes

Zucchini: You don’t need to peel the zucchini before you grate it. Using a grater with smaller holes gives you finely grated zucchini that melts into the batter. If you use a grater with larger holes, the zucchini pieces will be more noticeable but the muffins will still be delicious.

Storage: Keep leftover muffins in a sealed container at room temperature for up to three days. For longer storage, cooled muffins can be frozen for up to two months. Just thaw them overnight in the refrigerator before enjoying.


Nutrition

  • Serving Size: 1
  • Calories: 287kcal
  • Sugar: 25g
  • Sodium: 73mg
  • Fat: 13g
  • Saturated Fat: 10g
  • Trans Fat: 1g
  • Carbohydrates: 40g
  • Fiber: 2g
  • Protein: 4g
  • Cholesterol: 33mg

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